Craigslist buyer wants refund?

I emptied my closet and sold 2 big garbage bags full of my old clothes for $20.
She emailed me later saying that some of the items were in bad condition and she wants the issue resolved.
Should I ignore her or what should I do?

That price is what you pay at any noontime bag sale at a rummage sale.
And all sales on CraigsList are AS IS.
Tell her it's done, and the sale is final. If she wishes to get her money back, she is free to sue you in small claims court. She wont. Block her number, and if there is any more trouble, report her for harassment to CraigsList and to the local police.

Do you wear second-hand clothes? If you have a job, a warm place to sleep and three meals a day, give her the money. Anyone who would buy garbage bags of clothes is pretty poor. Life is too short to be mean to the less fortunate.